Year Percent of Working-Age Population 1960-01-01 13.6857466793031 1961-01-01 14.0371786078761 1962-01-01 14.4223731947702 1963-01-01 14.8240557011062 1964-01-01 15.2119124642912 1965-01-01 15.5687825241498 1966-01-01 15.9516326832729 1967-01-01 16.2840238003829 1968-01-01 16.5794227906596 1969-01-01 16.8576931855489 1970-01-01 17.1350805239855 1971-01-01 17.4859059158373 1972-01-01 17.7926423403702 1973-01-01 18.0968218369729 1974-01-01 18.4562531162349 1975-01-01 18.8972330245826 1976-01-01 19.4873922069559 1977-01-01 20.1689186591644 1978-01-01 20.8003117948647 1979-01-01 21.1576544231065 1980-01-01 21.1226516869573 1981-01-01 20.8239830347893 1982-01-01 20.1408452534690 1983-01-01 19.3080271343382 1984-01-01 18.6415286553194 1985-01-01 18.3024450547385 1986-01-01 18.5295940721285 1987-01-01 19.0017992379865 1988-01-01 19.5824990923210 1989-01-01 20.0687735305086 1990-01-01 20.3485924587906 1991-01-01 20.7076187965926 1992-01-01 20.8962676827419 1993-01-01 20.9706911352045 1994-01-01 21.0152801840724 1995-01-01 21.0775423009653 1996-01-01 21.3532027665329 1997-01-01 21.6283450967700 1998-01-01 21.8813481064475 1999-01-01 22.0710227170628 2000-01-01 22.1763298816251 2001-01-01 22.3620666295981 2002-01-01 22.4624093691935 2003-01-01 22.5158215316827 2004-01-01 22.5767490937323 2005-01-01 22.6792080111586 2006-01-01 22.8416294893897 2007-01-01 23.0099205254113 2008-01-01 23.1554898593444 2009-01-01 23.2526712177374 2010-01-01 23.3050883050579 2011-01-01 23.7294202069430 2012-01-01 24.1150640541462 2013-01-01 24.5245517254584 2014-01-01 25.0409067311709 2015-01-01 25.7050393731816 2016-01-01 26.6312190192151 2017-01-01 27.6834653598844